Abbing attachment for typewriting machines



June 3, 1930. s. of DEGENER .ADDING ATTACHMENT FOR TYPEWRITING MACHINESOriginal Fi led June 10. 1926 x 35 ing means.

Patented June 3, T930 7 NI ED; STATES,

* PATENT o FicE GUSTAVE o. DEGENER, or SAN FRANCISCO, cumo mm,assieivoa'ro ROYAL 'rvra- WBITERRCOM PANY, 1176., OF NEW YORK, N. Y., ACORPORATION NEW YORK Anmivehzfiracnmnnr r03 TYPEWRITING MACHINESOriginal application meazrune 10, 1926, Serial No.

' This ,application'is a division of my prior Patent 1,688,805, Oct.23,1928.

The object of the invention herein disclosed is to provide a-meanswhereby all of the keys which operate the adding mechanism are lockedunless the totalizer is in proper pos1- 'tion to receive the impulsefrom'the master wheel or other transmitting mechanism. The {constructionshown also acts as a decimal l0 lock to prevent writing of numbers inthe spaces usually employed for writing commas a and periods in anumber.

The invent-ionis embodied in a machine of the same general character asthat shown in '15 my prior Patent 1,633,242, June 21, 1927, and there-isillustrated herein only so. much of the mechanism as is necessary toshow the con: struction .and operation of the present invention. 'In thedrawings: 1 Figure 1 is awerticallongitudinal section through theattachment with parts in-elevation. Figure 2 is a fragmentary viewshowing part of the means for locking the keys unless the totalizer iscorrectly positioned.

Figure 3 is a perspective view of a portion of this means: i .Figure4'is a side elevation of a rocklng frame forming a part of the lockingmeans. Figure 5 is a front view of the frame shown in Figure J I Figure6 is-a perspective view of another rocking frame forming a part;of thelock- The attachment comprises a frame having side members, one of whichis indicatedat 2, and transverse connecting members 5 and 8 as well astransverse rods '10 and 11 upon 4 which travels the totalizer 12. Thenumeral key levers H of the typewriting machine are connected by links15 through crank arms 14 114,950. Divided and this application filed Fay$5, 1

- 1927. Serial No. 194,132. I

with teeth 23 throughout a portion of its periphery with which mesh rackteeth 24 on the sliding member 17. It is obvious that ,a depression ofany key lever will move rearwardly the corresponding'sliding bar 17 andoperate the cam gear 21 which through mechj anism described in my priorapplication or through other equivalent devices will set up the propernumber in the totalizer. The precise character of the connections isimmapresent invention is con- 1'7 engage this universal frame 44 so t atit will be rocked each time a numeral key is depressed. A spring 48 isattached at one end to one of the arms and at the other end to a fixedportion of the frame 49 and tends tomturn the frame 44 to normalposition and thereby return the a ctilated key lever to its normalposition. i a I The universal frame 44 caries a, roller 50 which ispositioned to engage the cam end 51 of a rocking member 52. wThis memberhas a broad bearing on a pivot shaft 53 and has an u per end 54 providedwith an 'oifset .55.

' is offset 55 rests against the free end of a wire spring 56, the otherend of which is .attachedby ascrew 57- to a secondrrocking frameparticularly shown in Figure 6 which is mounted on the-same pivotshaftp53; This .frame 58 has two side members 59"and 60. The member 59has an n wardly extending arm 61 with a rounded 'en which enga esbetween the two pdrtions of a stopmem er 62 in the form 0 an open endedloop to there- .by limit the movements of the frame 58 in eitherdirection. 7

The side oithe frame 58 has an upwardwhich are carried by the ends 'ofroek-shaf t- 1:? extending arm 63 which is connected by a 13. Anupwardlyextending crank .arm 16 link 63' to a slide member 64 which is molfnt- 4is attached to the other'end of each rock shaft ed 'to slide in groove'son a support 65 which and this crank arin is pivoted at its upper iscarried by a bracket 66 depending from the end to a sliding bar 17,'therear end of which supported and guided by-a member 18."

A plurality of cam gears 21 are supported held in central position .bytwo members 69,. upon a. shaft 22 and each gear is provided one of whichis shown detached inFigure 3, we

.cross bar 5. A pawl '67 is pivotedon a short stud 68 carried by theslide 64 and is normally which members are pivoted on a common pivot 70and normally drawn toward each other by a coil spring 71, the ends ofwhich engagein notches 72 in the member 69. The

rounded ends of these members engage on opposite sides of the pawl 67and normally 1 hold it in central position although allowing a periodwould naturally come in the writings of a number.

When a key is actuated the universal frame 44 is operated from thecorresponding sliding bar 17 v and this results in rocking the frame 52and through the spring 56 also rocks 'the frame 58. The rocking of theframe 58 through the arm 63 and link 63' movesthe slide 64 with the pawl67 toward the rack bar 74 and the teeth 75 thereof. If the the settingup of the number corresponding totalizer carriage is in the properposition'for tinue to move and the spring 56 will be tensioned'duringsuch movement. The number will therefore be printed and set up in thetotalizer in the usual manner. However,

I if the pawl 67 passes into one of the spaces between the teeth 75,which means that the totalizer is not in proper positionor that it 'isin such position that a comma or period should be written, the movementof the frame 58 will not be stopped but will continue and this willswing the arm 76 downward into the path of the universal frame 44- andstop the movement thereof before the frame has I moved far enough to setupthe number in the totalizer or to print from the typewriter key.

It is sometimes desired to write in the computing zone without settingup numbers in the totalizer and there is accordingly provided a non-addkey 77 which is pivoted at 78 and normally drawn in one direction bysprin 79. The rear end of this key is provided with an offset 80extending to one side thereof. Whenever this key is depressed thisoffset is-movednp sufficiently to be in the path of an arm 81 carried bythe rocking frame 58.

Therefore, operation of this rocking frame will be prevented by theengagement of the arm 81 "with the offset end 80 of the non-add lever,regardless of the relative position of the register.

As stated above, this invention may be employed with widely differingtypes of com ,puting devices and it is not essential that the samebeassociated with a typewriting machine. Minor modifications in theprecise form and construction can be made without departing from thespirit of the invention which is to be regarded as limited only by thescope of the appended claims.

' I claim as my invention:

1. A computing mechanisnr comprising a travelling totalizer, devices forentering numbers in said totalizer when it is in the computing zone,keys for actuating said devices upon full depression of any key, andmeans set by the keys for preventing the full depression of said keys'to enter a number when the totalizer is not correctly positioned.

2. A computing mechanism comprising a travelling totalizer, devices forentering numbers in said totalizer when it is in the computing zone,keys for actuating said devices, and means set'by the keys forpreventing the full depression of said keys to enter a number when thetotalizer is not correctly positioned, said means comprising a"universal frame operated by the depressionof any key and a stop movableinto position to limit the operating movement of the frame and tothereby prevent full depression of the key.

3. A computing-mechanism comprising a travelling totalizer, devices forentering numbers in said totalizer when it is in the computing zone,keys foractuating said devices, and means for preventing the depressionof said keys to enter a number unless the totalizer .is correctlypositioned, said means comprising a rack movable with the totalizer andhaving a tooth for each position in which a digit should be written, apawl cooperating with said teeth, and movable between the teeth of therack upon depression of any key when the to'talizer is incorrectlypositioned, and a stop movable by a key into a position to limit theeffective depression of said key when the pawl is not in register with atooth of the rack 4. 'A computing mechanism comprising a travellingtotalizer, devices for entering numbers in said totalizer when it is inthe computing zone, keys for actuating said devices, and means forpreventing the depression of said keys to enter a number unless thetotalizer is correctly positioned, said means comprising a universalframe operated by the depression of any key, a second frame yieldinglymoved by the first frame and carrying a stop which is moved intoposition to stop the universal frame unless the totalizer is correctlypositioned. 1'

5. A computing mechanism comprising a travelling totalizer, devices forentering numbers in said totalizer when it is in the computing zone,keys for actuating said devices and decimal lock mechanism forpreventing the depression of said keys to enter a numtravellingtotalizer, devices for entering.

numbers in said totalizer when it is in the computing zone, keysforactuatin'g said devices, *and decimal lock mechanism forpreventingthe depression of said keys to enter a number unless thetotalizer is correctly posit-ioned, said mechanism comprising a toothedmember travelling withthe totalizer, a pawl moved to cooperate with thetoothed member by the initial depression of.

said keys, a universal frameoperated by said keys, and means forstopping the movement of said frame unless the pawl engages one of. saidteeth.

7. A computing mechanism comprising a travelling totalizer, devicesforentering numbers in said IOtElllZQI' when 1t 15 1n the computingzone, keys for actuating'said devices, and decimal lock mechanism forpreventing the depression of said keys to enter a number unless'thetotahzer iscorrectly positioned, said mechamsm comprlsing a toothedtravelling with the totalizer, a pawl moved to cooperate with thetoothed memher by the initial depression of said keys, a universal frameoperated by said keys, a second frame yieldingly moved by the firstframe. and a stop carried by the second frame and moved into the path oftheunibers in saidtotalizen when it is in the com-I ated by the initialdepression of the keys, a

.versal frame unless the pawl said teeth.

8; A computing mechanism comprising a travelling totalizer, devices forentering numengages one of puting Zone, keys for actuating saiddevice's, saicl totalizer being free tomove at all times when in the,computing "zone, means including a rocking frame which operates auto.-maticallyto prevent effective depression of said keys unless the totalizer is correctly positioned, and a separate key cooperating with therocking frame for disabling the last men-' tioned means. 1

' 9. In decimal lock mechanism for computing mechanism having atravelling totalizer and key actuated devices for entering numberstherein, the combination. of a toothed device carried by the totalizer,a slide operpawl pivoted on said slide and moved toward said teeth, andmeans for preventing further depression of said keys unless the pawl,engages a tooth.

10. In decimal lock mechanism for computingmechanism having a"travelling totalizer and key actuated devices for entering I of thepreventing means.

numbers therein, the combination of a toothed device carried by thetotalizer, a slide operated by the initial depression of the keys, apawl pivoted on said slide and moved toward said teeth, resilient meansfor holding I said pawl normally in central position, and Q means-forpreventing further depression of said. keys unless the pawl engages a"tooth.

11. In decimal lock mechanism for computing mechanism having atravelling to:

talizer and key actuated devices for entering numbers therein, thecombination of a device carried by the totalizer and having a tooth foreach position wherein a number should be entered,a pawl moved towardsaid teeth by the initial depression of any key,-, and

means for preventing further depression of said key to enter a number 1nthe totahzer unless the pawl engages a tooth. 12. Acomputing mechanismcomprising a travelling totalizer, devices for entering 11ambers in saidtotalizer when it is in the com puting zone, keys for actuating saiddevices and means operated by an initial depression of any key forpreventing suflicient depression to enter a number in the totalizerunless I the totalizer is correctly positioned.

I 13. In a computing machine, the combination of a traveling totalizer,devices for entering numbers in the totalizer when the same is in thecomputing zone,'keys for actuating said devices upon full depression ofany key, means set bysthe keys for preventing full depression thereof toenter a number when the totalizer is not in correct position, and meanscontrolled by the totalizer for determining whether the preventing meansshall I or shall not function. I

'14. In a computing machine the combination of a traveling totalizer,devices for entering numbers in thetotalizer when in, the

computing zone,keys for actuating said devices upon full depression ofany/key, means setby. thekeys' for preventing full depre'ssion thereofto enter a number when tlietoried by the totalizer, and a pawlcooperating .110 talizer is not in correct pos tion, a rack car'- withthe rack and controlling the operation 15. Ina computing machine thecombinaing the entry of amounts therein upon full depression of any key,means for preventing r 1 tion of a traveling totalizer, keysforiefiiect- I the full depression. of the keys when the totalizer isnot correctly positioned, a universal member adapted-to be operated byany of the keys, a stop adapted to be placed lnthe path of the universalmember, and means controlled by the totalizer for moving the stop intothe path of the member when the totalizer is not incorrect positionr gIn testimony whereof, I have hereunto sub- 1 scribed "m name.

eUs'rAvno. niienlviinj iao

